Hi Thrift Bee, sorry no one has come back to you- the simple answer is I'm not sure. We don't generally weigh them much- no weigh crate. I would guess at maybe around 10 -15 kgs, but it is just a guess, thinking about what our kids feel like. Also, our kids are generally always either pure AN or BT types only, not a mix of the two. It will also depend on if they are boys or girls, castrated or not?
Beth